diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
index 35ad3f5c4c0e..c5e5a6c8d69e 100644
--- a/drivers/usb/serial/mos7840.c
+++ b/drivers/usb/serial/mos7840.c
@@ -2587,7 +2587,6 @@ error:
 		kfree(mos7840_port->ctrl_buf);
 		usb_free_urb(mos7840_port->control_urb);
 		kfree(mos7840_port);
-		serial->port[i] = NULL;
 	}
 	return status;
 }